docs: fix import for Response

Author: Michael Brewer

Diff for: docs/core/event_handler/api_gateway.md

@@ -537,7 +537,7 @@ You can use **`exception_handler`** decorator with any Python exception. This al
 from aws_lambda_powertools import Logger, Tracer
 from aws_lambda_powertools.logging import correlation_paths
 from aws_lambda_powertools.event_handler import content_types
-from aws_lambda_powertools.event_handler import APIGatewayRestResolver, Response
+from aws_lambda_powertools.event_handler.api_gateway import APIGatewayRestResolver, Response
 
 tracer = Tracer()
 logger = Logger()